.app{
    margin-top: 20px;
}
.phone{
    width: 30%;
    margin-top: 40px;
    height: auto;
    color: #6b5349;
}
.content{
    width: 100%;
    height: auto;
    margin-top: 20px;
}
.p{
    width: 80%;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    text-align: center;
}
.p_img{
    width: 180px;
    height: 180px;
}
.p_pre{
    font-size: 15px;
    color: #6b5349;
}
.mar{
    margin-top: 50px;
}